Question

111×7.1+222×1.8+333×3.1简便计算？

Answer 1

简便运算是直接提取公约数111得
111x7.1+222x1.8+333x3.1
=111x(7.1+2x1.8+3x3.1)
=111x(7.1+3.6+9.3)
=111x20
=2220

加油！

Answer 2

原式=111*7.1+111*2*1.8+111*3*3.1=111*7.1+111*3.6+111*9.3=111*（7.1+3.6+9.3）=111*20=2220